Description: This function creates a new material.
Usage:
1. A pop-up window appears with the material types. The list of the material types depends on the analysis program (e.g., NASTRAN, LS-DYNA) defined in the SETUP menu.
2. Once the user has chosen a material type, a pop-up window appears with the material's properties.
• The displayed property table allows the user to insert values for the material's properties